Indicative
Present Indefinite
I sharpen
you sharpen
he/she/it sharpens
we sharpen
you sharpen
they sharpen
Present Continuous
I am sharpening
you are sharpening
he/she/it is sharpening
we are sharpening
you are sharpening
they are sharpening
Present Perfect
I have sharpened
you have sharpened
he/she/it has sharpened
we have sharpened
you have sharpened
they have sharpened
Present Perfect Continuous
I have been sharpening
you have been sharpening
he/she/it has been sharpening
we have been sharpening
you have been sharpening
they have been sharpening
Past Indefinite
I sharpened
you sharpened
he/she/it sharpened
we sharpened
you sharpened
they sharpened
Past Continuous
I was sharpening
you were sharpening
he/she/it was sharpening
we were sharpening
you were sharpening
they were sharpening
Past Perfect
I had sharpened
you had sharpened
he/she/it had sharpened
we had sharpened
you had sharpened
they had sharpened
Past Perfect Continuous
I had been sharpening
you had been sharpening
he/she/it had been sharpening
we had been sharpening
you had been sharpening
they had been sharpening
Future Indefinite
I will sharpen
you will sharpen
he/she/it will sharpen
we will sharpen
you will sharpen
they will sharpen
Future Continuous
I will be sharpening
you will be sharpening
he/she/it will be sharpening
we will be sharpening
you will be sharpening
they will be sharpening
Future Perfect
I will have sharpened
you will have sharpened
he/she/it will have sharpened
we will have sharpened
you will have sharpened
they will have sharpened
Future Perfect Continuous
I will have been sharpening
you will have been sharpening
he/she/it will have been sharpening
we will have been sharpening
you will have been sharpening
they will have been sharpening
Conditional
Conditional Present
I would sharpen
you would sharpen
he/she/it would sharpen
we would sharpen
you would sharpen
they would sharpen
Conditional Present Continuous
I would be sharpening
you would be sharpening
he/she/it would be sharpening
we would be sharpening
you would be sharpening
they would be sharpening
Conditional Perfect
I would have sharpened
you would have sharpened
he/she/it would have sharpened
we would have sharpened
you would have sharpened
they would have sharpened
Conditional Perfect Continuous
I would have been sharpening
you would have been sharpening
he/she/it would have been sharpening
we would have been sharpening
you would have been sharpening
they would have been sharpening